 | This is an information page. It is not an encyclopedic article, nor one of Wikipedia's policies or guidelines; rather, its purpose is to explain certain aspects of Wikipedia's norms, customs, technicalities, or practices. It may reflect differing levels of consensus and vetting. |
 | This page in a nutshell: Avoid non-free content whenever possible; if you'd like to upload it, you must follow specific guidelines. |
Wikipedia's copyright guidelines are probably the most complicated part of the whole site. So here's a breakdown of what the rules are and what they mean.